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212021120321 is a prime number
BaseRepresentation
bin1100010101110101110…
…0011000110101000001
3202021021010010212110222
43011131130120311001
511433204401322241
6241222352232425
721214036534013
oct3053534306501
9667233125428
10212021120321
1181a1043888a
123511153b715
1316cbb96a01a
14a39483a1b3
1557ad9b7a4b
hex315d718d41

212021120321 has 2 divisors, whose sum is σ = 212021120322. Its totient is φ = 212021120320.

The previous prime is 212021120273. The next prime is 212021120329. The reversal of 212021120321 is 123021120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134424889600 + 77596230721 = 366640^2 + 278561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-212021120321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212021120321.

It is not a weakly prime, because it can be changed into another prime (212021120329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010560160 + 106010560161.

It is an arithmetic number, because the mean of its divisors is an integer number (106010560161).

Almost surely, 2212021120321 is an apocalyptic number.

It is an amenable number.

212021120321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021120321 is an equidigital number, since it uses as much as digits as its factorization.

212021120321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021120321 its reverse (123021120212), we get a palindrome (335042240533).

The spelling of 212021120321 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, three hundred twenty-one".